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IFC 4x3 | Spatial decomposition in Spreadsheet Import Export

1. S by steverugi on 19 Dec 2024, edited 29 Dec 2024 # +6 votes

   I am using IFC 4x3 for culvert and bridge models

   this is my spatial decomposition, in this example is typical culverts

   

   now I want to use Spreadsheet to export elements with Project, Site, Bridge name, Bridge part, Space as Attributes along with specific ones like Class, PredefinedType, etc..

   little issue

   in Selectors we don't have (yet) Project , Bridge, BridgePart but there is a way around, with a bit of typing..

   workaround

   (what I use in CSV Attribute, with Search Group Filter as IfcBuiltElement)

   1. Project - since Site is available I found Project with

   site.Decomposes.RelatingObject.Name

   2. Site - availalbe

   site.Name

   3. Bridge - a bit more complicated starting from the IfcBuiltElement

   ContainedInStructure.0.RelatingStructure.Decomposes.0.RelatingObject.Decomposes.RelatingObject.Name

   4. BridgePart - one step above

   ContainedInStructure.0.RelatingStructure.Decomposes.0.RelatingObject.Name

   5. Space - available

   space.Name

   that's it! or is there an easier way?

   thanks

   PS in some publications I learned that IfcBridgePart can decompose further in sub - IfcBridgePart but at the moment it's not available in Bonsai. That is why I use Space instead

2. P by ppaawweeuu on 29 Dec 2024 # +1 votes

   Gold! Thank you!

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